Stable liquid melamine urea formaldehyde resins, hardeners, adhesive compositions, and methods for making same
AssigneeCytec Technology Corp.
InventorsHuide Dennis Zhu, William Jacobs, III, Robert G. Lees, Luis Mendonca, Roger C. Rasch
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Abstract
The invention relates to a process for preparing a liquid melamine urea formaldehyde resin that has long term stability. The invention also relates to a liquid MUF resin with a high formaldehyde and melamine content. The invention further relates to a liquid suspension hardener including a catalyst, a thickener, a filler, and water. The invention also relates to a adhesive composition for use in wood bonding that is made by adding a hardener to the resin.
Claims11
A liquid resin comprising formaldehyde, melamine, and urea, wherein the molar ratio of formaldehyde to melamine and urea is about 1.5:1 to 2.5:1, the molar ratio of melamine to urea is about 0.5 to 1.5:1, and the resin has a viscosity of less than about 1500 cps for about 14 days.
Dependencies are inferred from the claim text.